The Fish that lives under the deep waters is difficult to catch.
But those near the surface are caught easily.
Sumiran, that is done at the surface level; such as repeating after someone simply with the lips or as a ritual gets distracted very easily.
Doing Sumiran at the deeper level; form the Chitta, the subconscious mind, has less chances of getting distracted.
“Prabhu ki ustati karahu sant meet
Saavdhaan ekaagra cheet”
“Sing the praise of Lord, Oh my saintly friends
With total concentration and focused Chitta (mind)”
SGGS Page # 295
“Yathaa Deepo Nivaastastho Naingate Sopmaasmrita
Yogino Yattchittasya Yunjato Yogamaatmnah ||
“Just like a lamp in a covered sheltered place does not flicker,
Similar is the simile of a yogi practicing yoga with undisturbed controlled mind.” Bhagvad Gita 6:19
Let’s try to go deeper while doing Sumiran.